🚗 Stay Cool Under Pressure! Quickly assess battery acid condition to ensure reliable vehicle performance. Just 2-3 drops for instant results—no batteries required! Accurate freezing point readings for both ethylene and propylene glycol. Easily determine antifreeze concentration levels for optimal performance. Automatic temperature compensation for hassle-free measurements. Concentration: 0-70% Ethylene Glycol Battery Acid: 1.100~1.400kg/l Freezing Point: -84°F to 32°F The 3-in-1 Antifreeze Tester is an essential tool for any vehicle owner, allowing you to accurately measure the freezing point and concentration of antifreeze, as well as check the condition of battery acid. With a user-friendly design that requires no batteries and provides quick results, this tester ensures your vehicle is always ready for the road.